Power lift device



Sept. 28, 1943. J. MoRKsKl owER LIFT DEvIcE Filed Jan. 13, 1942 2 Sheets-Sheet l Sept. 28, 1943. J. MoRKosKl POWER LIFT DEVICE Filed Jan. `13, 1942 2 sheets-,smet 2 I Mw j the other of the engaging portions 25 in the portion 25, as will be presently described in detail. The manually controlled means 33 operates the power lift and comprises an engaging means in the form of a pair of spring-pressed dogs 39 and 4U which are mounted on a shaft 4| that is journaled in the housing sections I6 and I8 as shown in Figures 2, 3, and 4. In Figure 3, the section is taken so that the dog 40 is shown in phantom, and in Figure 4, the dog 39 is shown in phantom. The shaft 4| is positioned between the shaft 2| and the connection of the axle to the housing |5. the casing can be arranged more compactly as will be apparent upon reference to Figures 3 and 4. The casing may extend close to the periphery of the plate portions 25 and 32, the dogs 39 and 40 having ample room for their operation in the space between the walls of the housing l and its connection to the axle The dog 39 is keyed to the shaft I and the dog 4U is so mounted on the shaft as to have limited angular movement with respect to the shaft. A tension spring 43 connects the dogs so that the dog 4D is urged toward the dog 39, the result being that the dog 40 is resiliently held in engagement with a notch 25 in the plate 25. The dog 39 carries a lug 33a that is adapted to engage a lug 40a on the dog 40. When the shaft 4| is rocked, as by a lever 42, to the position shown in Figure 3, the lug 39n on the dog 39 engages the lug 402 on the loosely mounted dog 40 and thus rocks the dog 40 out of engagement with the notch 26 in the plate 25. When the lever 42 is moved in the other direction, after the plow has been lifted, the shaft 4| is rocked and the keyed dog 39 is disengaged from a notch 33 in the plate 32. The spring 43 then causes the free dog 4U to ride on the outer periphery of the plate 25, and when the next notch 25 presents itself the dog 40 drops in. A pull rope is connected tothe lever 42 and provides means by which the lift may be remotely controlled.

As previously mentioned, the bevel gear 23 is the driver gear, and, when the implement is in an operating position, the shaft 2|, the bevel gear 29, the pinion gears 34, and the journaled bevel geai` 3| rotate constantly and the dog 40 is in engagement with one of the engaging portions 26 so as to hold the member or carrier 25 and the lifting arm 35 in fixed positions.` The bevel gear 3| is driven by virtue of its connection with the bevel gear 29 through the pinion gears 34. Figure 4 shows the position of the dog 40 as being moved out of a notch or opening 25 to effect operation of the power lift. At the same time, the dog 39 has been engaged with one of the notches 33 in the plate 32 of the gear 3|.

When it is desired to `lift the implement, the lever 42 is moved so that the dog 39 assumes the position shown in Figure 3 and engages one of the engaging portions 33 of the bevel gear 3|. The bevel gear 3| is then locked against rotation. Since the implement is still moving over the ground, the land wheel |2 rotates the axle 2| which in turn rotates the bevel gear 29, and, by virtue of its connection through the pinion gears 34 to the bevel gear 3| which is `now in a xed position, the memberl or sleeve portion 24 is rotated until the dog 40 seats itself in the other engaging portion 261 of the radially extending portion 25. The rotation of the sleeve portion 24 moves the lifting arm 35 approximately 150 from its former xed lposition. The movement ofthe lifting arm 35 through the link ,3l raises the By positioning the shaft at this point,

plow. By virtue of the drive produced by the bevel gears 29 and 3| and the pinion gears 34, approximately two complete rotations of the land wheel |2 are necessary to move the lifting arm 35 to raise the plow. In this way small land wheels may be used, since the reduced gear lessens the load and the land wheel |2 will not slip. It is `also to be noted that the operation of this novel mechanism is almost instantaneous in that. when the lever [12 is moved into position for lifting the plow, the dog 39 can always find an engaging portion 33, since the entire periphery of the bevel gear 3| is provided with engaging por tions 33. In other words, the engagement and disengagement of the clutch is accomplished through a small angular rotation of the clutch. The dog mounting is such that a more compact case may be provided for the entire power-lift device. Since the device is enclosed, suitable lubricants may be provided for the parts which materially reduce their wear.

In View of the foregoing description, it should be apparent that a novel, compact, and efficient power-lift device has been provided' for implements, and that the structure disclosed accomplishes all the previously mentioned objects.

While only a preferred construction embodying the principles of the present invention has been shown and described,it is to be understood that the invention is not to be limited to the specific details shown and described, but that, in fact, widely different means may be employed in the practice of the broader aspects of the invention.

What is claimed is:

1. A power-lift device comprising, in combination, a driver shaft, a driven shaft having at least two engaging portions, a gear secured to the driver shaft, a-gear journaled on the driven shaft and having a plurality of engaging portions, gears carried by the driven shaft and adapted to engage said gear on the driver shaft and the gear journaled on the driven shaft, and means normally engageable with one of the engageable portions of the driven shaft for holding said shaft from rotating and upon disengagement therefrom engageable with one of the engaging portions of said gear journaled on the driven shaft for driving the driven shaft from the rotation of the driver shaft until the means engages the other engaging portion of the driven shaft.

2. A power-lift device comprising, in combination, a driver shaft, a driven shaft having at least two engaging portions, a bevel gear secured to the driver shaft, a bevel gear journaled on the driven shaft and having a plurality of .engaging portions, pinion gears kcarried by the driven shaft and adapted to engage said bevel gear on the driver shaftand the bevel gearjournaled on the driven shaft, and a manually controlled means normally engageable with one of the engageable portions of the driven shaft for holding said shaft from rotating and upon disengagement therefrom engageable with one of the engaging portions of said bevel gear journaled on the assorbe and *adapted engage said bevel gear .on the driver and -the bevel-gear Ejournaled Sonthe .driven shaft, fand a .spring-'pressed manually operable lever normally engageable with :one of the engageable portions Aof thefdrivenish'aft for holding said shaft from rotating :and up on :disengagement therefrom engageable With one of :the engaging portions of said igear journaled von the driven shaft for driving fthe driven shaft :from the 'rotation of the driver-shaft .until fthe means engages the otherien'gaging portion 'of the idriven shaft.

4. A power-liftfdevice comprising, `in combination, a driver shaft having .a traction Wheel .secured ithereto,.a .drivenshaft fhaving ,at least two peripheral engaging portions, fan arm secured lto the rend of the :driven shaft, ia'bevel lgearsecured to the driver shaft, a bevel gear journaled 'on Athe driven .shaft :and having fa .plurality .of 'peripheral engaging portions, pinion gears oarried :by 'the driven shaft .and Iadapted to :engage .said 'bevel gear on 'the vdriver shaft and :the fgear vjournaled on Ythe driven shaft, vand a spring-.pressed manually controlledzdog'normally engageable with one of the rengageable portions .of the driven shaft for holding said shaft fromrotating and maintaining said arm in :one position, :and upon disengagement therefrom :engageable With one .of the engaging portions .of said gear :journaledon thedriven shaftzforfdr'iving the driven shaft from the'rotation of 'the .driver Vshaft by vthe-Wheel -secured ltheretountiltheimeans engages the other engaging portion of .the .driven shaft, 'thereby maintaining the arm .in Yanother position.

5. A power-lift device comprising, in combination, a housing .in which there is journaled `a driver shaft and adriven shaft zhaving at least two peripheral .engaging portions, a bevel gear secured to the driverfshaft Within said housing, abevel gear journaled-'onthe drivenshaft .Within said housingand having :a plurality of :peripheral engaging portions, pinion gears :carried by the driven shaft-and adapted .to engage said gear on the driver shaftand Lthesgear journaled on the driven shaft, and means :normally engageable with one of theiengageablezportions of the driven shaft -lfor holding said -shaftffrom rotatingA and upon disengagement therefrom Yengageable with one of the engaging .portions of saidgeariollrnaled on the driven shaft for :driving the .driven shaft fromtherotation of the driver shaft until the meansfengages the other engagingportion of the driven shaft. Y

6. .A poWer-liftdevice comprising,.in combination,ia housing, a .driver shaft Vournaled in the housing,.a.bevel.gear secured to the driven shaft, a driven shaft having vat .least `two peripheral engaging portions vjournaled in the housing, a bevel gear :having :a .plurality of peripheral engaging portions journaled on the driven shaft, pinion gears` carried .by the driven shaft .and adapted ytoengagethe bevel gear secured on the driver 'shaft .and .the .bevel gear journaled on the driven shaft, and manually -controlled means normally engageable With `one of the engaging portions of the driven shaft, for holding sald shaft in one position and upon disengagement therefrom engageable with one of the engaging portions of the bevel gear journaled on the driven shaft, whereby the driven shaft through said gears rotates the driven shaft until said means engages the other engaging 1301"'01011 0f 11.1? dnl/en shaft, thereby holding it in another pos1t1on.

'7. A power-lift device comprising, 1n combination, a housing, a driver shaft journaled 1n the housing, a bevel gear secured to thedriver shaft EID within fthe housing, a driven amember ,journaled on the 'driver shaft, said idriven member 'conni-A prising ra :radially .extending portion in 'which 'two peripheral eng-aging .portions fareuprovided :and sa sleeve lportion extending :from :said radially'iextending .portion out :of .said housing, -Ian farm fsecured to :said sleeve portion, .a bevel :gear :having a .plurality `of peripheral engaging .portions 'journaled onsaid driven member, pinionzgears carried bysaid iradially .extending `portion .ofthe -driven member .and adapted to engage the bevel rgear journaledA on .the :driven imember fand vthe :bevel gear. secured tothe driver-shaft, a .shaft fjourn'aledy in said housing, za manuallyoontrolled lever-ex` tending from said sshaft, a spring-'pressed :dog mounted on .saidshaft Within thehousing iand adapted to normally engage one of the engaging portions :of :the .driven meniber `for :maintaining said arm Lin a .fixed position :and Yupon actuation of :said lever imovable .into engagement 4with `aine of the fengaging .portions vof `said bevel fgear `iournaled `on the .driven,shaft, .whereby the rotation of .the-` driver shaft throughthe bevelfgear secured thereto andthe pinionigearsioarried bythe .driven member .will .rotate :said .member .until .the -zdog seats itself iin zthe otherzengaging portion rofrsaid driven -mernber thereby maintaining said arm :in

another nxed position.

lon said :driven member, .pinion gears carried by said radially "extending `portion of the driven member 'and Aadapted to Aengage ,the ybevel ,gear journaled :on the ydriven member ,and the bevel gear secured .to the drivershaft, a .Ishaftjournaled in said housing, .a :manually controlledilever extending :from said-shaft, a spring-pressed dog mounted on said shaft :Within :the housing ,and adaptedto normally engage one vof .the engaging portions of .the drivenfmemberl for ,maintainf ing said arm in axed position fand upon actuation of said lever movableiinto ,engagementwith one of the engagngportions` of said `bevelgear journaled on-thedriven shaft, whereby the :rotaie tionof thedriver shaft .through the bevel `gear secured ythereto and .the `fpinion'gears oarriedby thedriven memberf-Will .rotate said `member until the dog seats itself Iinthe other engaging portion of -said driven member therebymaintaininglsaid armfin another .fixed .positionwthereby adjusting said` implement part.

9. A power-lift:devicezforimplements comprising, in combination,` ahousing .having twomating sections, .alined sleeve portions extending from ythe matingsectionspof -the housing,A a :member journaled -ini one .fof the sleeve ,portions and exportions journaled on the member within the housing, said bevel gear engaging the pinion gears, a shaft journaled within the member and the other sleeve portion, a bevel gear secured to the shaft within the housing and engageable with the pinion gears, means for driving the shaft, and manually controlled means carried by the housing and normally engageable with one of the engaging portions of said member for holding the arm in one xed position and upon disengagement therefrom engageable with one of the engageable portions of the journaled bevel gear, whereby the rotation of the shaft will rotate the member until the manually controlled means engages the other engaging portion of said member thereby holding the arm in another fixed position.

10. A power-lift device for implements comprising, in combination, a housing having Vtwo mating sections, alined sleeve portions extending from the mating sections of the housing, a member journaled in one of the sleeve portions and extending inside and outside of the housing, an arm secured to the member outside of the housing, said member having a radially extending portion within the housing in which two peripheral engaging portions are provided and a circumferential flange portion, one of said sections having a circumferential flange portion adapted to receive said first mentioned circumferential flange, pinion gears carried by the radially extending portion, a bevel gear having a plurality of peripheral engaging portions journaled on the member within the housing, said bevel gear engaging the pinion gears, a shaft journaled within the member and the other sleeve portion, a bevel gear secured to the shaft within the housing and engageable with the pinion gears, means for driving the shaft, and manually controlled means carried by the housing and normally engageable with one of the engaging portions of said member for holding the arm in one fixed position and upon disengagement therefrom engageable with one of the engageable portions of the journaled bevel gear, whereby the rotation of the shaft will rotate the member until the manually controlled means engages the other engaging portion of said member thereby holding the arm in another fixed position.

l1. A power-lift device for plows having a crank axle journaled thereon comprising, in combination, a housing having two mating sections, means for securing said housing to said crank axle, alined sleeve portions extending from the mating sections of the housing, a member journaled in one of the sleeve portions and extending inside and outside of the housing, an arm secured to the member outside or the housing, a link connecting said arm and the plow, said member having a radially extending portion within the housing in which two peripheral engaging portions are provided `and a circumferential fiangeportion, one of said sections having a circumferential flange portion adapted to receive said first mentioned circumferential flange, pinion gears carried by the radially extending portion, a bevel gear having a plurality of peripheral engaging portions journaled on the member within the housing, said bevel gear engaging the pinion gears, a shaft journaled within the member and the other sleeve portion, a bevel gear secured to the shaft within the housing and engageable with the pinion gears, means for driving the shaft, and manually controlled means carried by the housing and normally engageable with one of the engaging portions of said member for holding the arm in one fixed position and upon disengagement therefrom engageable with one of the engageable .portions ofthe journaled bevel gear, whereby the rotation of the shaft will rotate the member until the manually controlled means engages the other engaging portion of said member thereby holding the arm in another xed position.

l2. A power-lift device comprising, in combination, a housing having two mating sections, alined bearing portions insaid mating sections, a member adapted to be held in a plurality of predetermined positions journaled at one of its ends in the bearing portion of one of said sections and journaled at its other end in said other section, pinion gears carried by said member, a shaft journaled Within said member and the bearing portion of one of said sections, means for driving said shaft, a bevel gear secured to said shaft and adapted to engage said pinion gears, a bevel gear'journaled on said member and adapted to engage said pinion gears, and manually controlled means for normally holding said member from rotating and upon release therefrom adapted to hold the journaled bevel gear from rotating, whereby the driver shaft through the pinion gears will rotate said member through a predetermined cycle at which time the means again holds the member in a fixed position.

13. A power-lift device: comprising a constantly rotatable driving element; an intermittently rotatable driven element; planetary gearing connecting said elements and including a sun gear on the driving element, a carrier on the driven element, planet gears on the carrier and meshing with the sun gear, and a ring gear meshing with the planet gears; means for releasably locking the carrier; means for releasably locking the ring gear; and means for controlling both of said locking means.

14. A power-lift device: comprising a constantly rotatable driving element; an intermittently rotatable driven element; planetary gearing connecting said elements and including a sun gear on one element, a carrier on the other element,planet gears on the carrier and meshing with the sun gear, and a ring gear meshing with the planet gears; a clutch for the carrier; a clutch for the ring gear; and means for controlling both of said clutches.

l5. A power-lift device: comprising a constantly rotatable driving element; an intermittently rotatable driven element; planetary gearing connecting said elements; and means for controlling said gearing to drive the driven element from the driving element.

JAMES MORKOSKI. 

